Update Setup Script for Fedora (#87)

* added contributing guide + setup script

* fix README typo

Co-authored-by: matt <30363562+mmattbtw@users.noreply.github.com>

* Added ffmpeg dependencies for fedora (#86)

* Added ffmpeg dependencies for fedora

Added ffmpeg dependencies for fedora as requested.
Fedora still requires nodejs to be installed seperately.

* remove missing ffmpeg warning from Fedora

Co-authored-by: Oscar Beaumont <oscar@otbeaumont.me>

Co-authored-by: matt <30363562+mmattbtw@users.noreply.github.com>
Co-authored-by: 사무엘 <84483873+kor-pixel@users.noreply.github.com>
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